Refine Your Search

Topic

Search Results

Technical Paper

Automotive High-Density Digital Tape Recording System

1974-02-01
740219
A high-packing-density digital tape recorder has been developed for long-term mobile recording of low-frequency analog input data. The recorder operates unattended directly from the car battery and offers significant advantages over conventional FM instrumentation tape recorders in size, power, weight, channel count, and record time. ...A high-packing-density digital tape recorder has been developed for long-term mobile recording of low-frequency analog input data. The recorder operates unattended directly from the car battery and offers significant advantages over conventional FM instrumentation tape recorders in size, power, weight, channel count, and record time. ...The recorder operates unattended directly from the car battery and offers significant advantages over conventional FM instrumentation tape recorders in size, power, weight, channel count, and record time. A separate playback unit enters the digital data directly into a computer for analysis, and provides an analog reconstruct of any one of the input channels for graphic analysis.
Technical Paper

Empirical Approach to Risk Factors in Rear End Collisions at Intersections - Effect of Lead Vehicle Behaviour on Premature Decisions of the Following Driver -

2010-04-12
2010-01-1014
Naturalistic driving data has been accumulated by driving data recorders to understand factors that contribute to collisions. Among the rear end conflicts at signalized intersections in the data, conflict data between the following vehicles and suddenly stopping lead vehicles were frequently observed just after their start.
Technical Paper

FLIGHT-TESTING EQUIPMENT for Large AIRCRAFT

1943-01-01
430131
Back in the sleeping compartment, completely unattended, automatic flight recorders and an automatic temperature recorder system continuously gather all possible information on the operation of the engines, controls, and performance of the airplane.
Technical Paper

New Possibilities with the Electronic Control of Proportional Valves

1984-09-01
841152
As electrical remote controlled proportional valves become more and more popular on the mobile market we will see an increase in the possibilities of performing functional tasks through electronic channels rather than with mechanical - hydraulic methods. Danfoss has taken an active share in this field by starting the development of a range of electronic “black boxes” for the mobile market. These are for use with the Danfoss electrohydraulic proportional valve. The following new products will be discussed (function, application and advantages for the end-user): - Electronic flow adjustment unit - Electronic memory function - Electronic speed control
Standard

Glossary of Automotive Inflatable Restraint Systems

2015-04-09
CURRENT
J1538_201504
The terms included in the Glossary are general in nature and may not apply to all manufacturers’ systems. All terms in Section 3 apply to automotive inflatable restraint systems in general which are initiated by an electric or mechanical stimulus upon receipt of a signal from a sensor. These terms are intended to reflect existing designs and the Glossary will be updated as information on other types of systems becomes available. Appendix A is included to identify terminology that is no longer in common use or specifically applicable to inflatable restraint systems, but was published in the December 2001 version of SAE J1538.
Technical Paper

LIN Bus and its Potential for Use in Distributed Multiplex Applications

2001-03-05
2001-01-0072
The increasing features and complexity of today's automotive architectures are becoming increasingly difficult to manage. Each new innovation typically requires additional mechanical actuators and associated electrical controllers. The sheer number of black boxes and wiring are being limited not by features or cost but by the inability to physically assemble them into a vehicle. A new architecture is required which will support the ability to add new features but also enable the Vehicle Assembly Plants to easily assemble and test each subsystem. One such architecture is a distributed multiplex arrangement that reduces the number of wires while enabling flexibility and expandability. Previous versions have had to deal with issues such as noise immunity at high switching currents. The LIN Bus with its low cost and rail-to-rail capability may be the key enabling technology to make the multiplexed architecture a reality.
Technical Paper

Object Oriented Modelling Approaches to Variable Granularity: Application to a Diesel Engine

1996-02-01
960875
This paper presents an original approach to modelling and simulating complex systems. The overall application used to illustrate this approach consists in modelling and simulating the transient behaviour of a diesel engine. Conventional modelling and simulation stages for small projects are presented. As a larger project needs additional tools, we have developed an original approach using two other models. We first introduced a new compound model which is a modelling approach where many white and/or black boxes are linked together. In the second stages of a project - implementation of the simulator - we introduced another Object-Oriented model. Variable granularity modelling and simulation are also presented in this project. Such a concept is a suitable for a project starting from scratch. At first the subsystems are not well understood; but as we start to understand them better, different kinds of models can be introduced.
Technical Paper

Reduction of Vehicle Leadtime by Body Engineering

1997-02-24
970578
Automotive Body Engineering has been one of the most important disciplines in automotive engineering during the past 100 years. A brief historical review will take place highlighting the major automotive trends which have challenged the expertise of the body engineer, including the major contributions of the body engineering profession that brought comfort, convenience and safety to the modern automobile. Finally, the current challenges to body engineering will be discussed. These include the need to drastically reduce program leadtime and control both engineering and product costs. The two areas in which the above stated challenges can be met are as follows: First, the technologies and materials being applied to new vehicle bodies will be discussed. Highlighted, will be the effect upon cost and leadtime reduction. Secondly, the component design process will no longer start with a clean sheet for a new design.
Magazine

Mobility Engineering: December 2015

2015-12-01
Uncertainty quantification The technique is a must for next-generation simulation tools. Oil-pump sizing Researchers from Hinduja Tech investigate options for low friction and power consumption. The future of Indian commercial aviation The growth in traffic that airport modernization has supported has also made a significant contribution to the local and national economies, while the improved infrastructure has been positive for the perception of India in the global market. Driving EVs toward lower cost The race ison to reduce battery and electric-drive systems cost while improving efficiency. Powering on Rolls-Royce's Chief Engineer discusses new technologies that inspire current R&D design and evaluation work as part of its strategic roadmap for future big commercial programs. HMIs extend beyond the cab Telematic functions are being integrated into multi-function user interfaces.
Technical Paper

A Strategy for Diagnosing Modern Truck Electrical Systems

1990-10-01
901172
A strategy is presented for diagnosing heavy vehicle electrical systems, today and into the future. The realities of diagnosing modern electronic systems are explored. In the future, original equipment manufacturers (OEM's) will hold an increasing responsibility in aiding the mechanic during the repair process. Electronic diagnostic capabilities are investigated from basic to futuristic concepts. The strategy is provided to guide the OEM and “black box” vendors through a diagnostic evolution. Diagnostic aids for today's vehicles should be realistic and compatible with systems already in place. A gradual evolution toward more sophisticated diagnostics in future vehicle electrical systems will follow.
X